Harris Legacy 99-1300-0, Operation & Technical Manual

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Revision B • 1/03
H A R R I S C O R P O R A T I O N
2-30
2 Installation
FUNCTIONAL DESCRIPTION OF CONNECTION
A module timer reset command shorts this pin to Pin 3.
A module timer reset command shorts this pin to Pin 2.
PIN NAME/NUMBER
TIMER RESET COMMAND
(pin 2)
TIMER RESET COMMON
(pin 3)
METER SWITCHER MODULE — EXTERNAL TIMER
The three 3-pin external timer connectors
have identical signals and connector pin outs.
They function in parallel with the console timer,
although only the auto reset command is ac-
tive (e.g., external timer reset is only triggered
by a module timer reset command).
Meter Switcher Module, External Timer — Simplified Logic Diagram
2
3 Auto Reset Common
Auto Reset Command
Inter
nal Logic
Notes:
There are no connections to pin 1.
Opto-Isolated outputs can sink up to 60 volts or
350 mA max. current flow.
2
3 Auto Reset Common
Auto Reset Command
2
3 Auto Reset Common
Auto Reset Command
+3.3VDC
EXT TIMER 1
EXT TIMER 2
EXT TIMER 3
Timer Reset Common
Timer Reset Command
no connection
(wire insertion end view)
Logic Connectors
3
2
1
Meter Switcher Module, External Timer — Signal Definitions